US Bridges

TR 11 over Rock Creek

Fair

Kankakee County, Illinois · 3.5 NW Manteno · Structure no. 046335800000000

Built
1980
45 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
119 ft
3 main spans
Daily traffic
125
2021 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

TR 11 over Rock Creek is a prestressed concrete box beam or girders - multiple carrying TR 11 over Rock Creek in Kankakee County, Illinois. It was built in 1980, so it is 45 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 125 vehicles a day, projected to reach 128 by 2046. The structure is 119 ft (36.3 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesTR 11
CrossesRock Creek
Location3.5 NW Manteno
RouteCounty Highway 0
CountyKankakee County
StateIllinois
Coordinates41.26471, -87.88659
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length119 ft (36.3 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2021)
Projected traffic128 by 2046
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was TR 11 over Rock Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is TR 11 over Rock Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.

How much traffic does TR 11 over Rock Creek carry?

About 125 vehicles per day (2021 count).

How long is TR 11 over Rock Creek?

The structure is 119 ft (36.3 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns TR 11 over Rock Creek?

It is owned by the Town or Township Highway Agency.